A Wideband and High Gain Cross‐Slot Antenna Using Partially Reflecting Surface

ABSTRACT This paper presents a wideband, high gain Fabry‐Perot cavity antenna operating at 3.5 GHz. The antenna utilizes a cross‐slot as the main radiating element, along with an artificial magnetic conductor (AMC) layer and a partially reflecting surface (PRS) layer. The integration of a AMC layer beneath the cross‐slot antenna facilitates high gain and unidirectional radiation characteristics. Additionally, a PRS layer is positioned in front of the antenna to further enhance both bandwidth and gain. The proposed antenna design achieves a 10 dB impedance bandwidth ranging from 3.02 to 3.89 GHz (25.43%) with a peak gain of 9.56 dBi. Overall size of the antenna is , where represents free space wavelength at an operating frequency of 3.5 GHz. The simulated and measured results are found to be in good agreement.